Machine for severing stay-bolts



(No Modei.)

R. W. BAYLEY.

MACHINE FOR SEVBRING STAY BOLTS.

No. 438,793. Patented 00b. 21, 1890.

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Z a/4% @W UNITED STATES PATENT ()FFICE.

RICHARD \V. BAYLEY, OF PITTSBURG, PENNSYLVANIA.

MACHINE FOR SEVERING STAY-BOLTS.

SPECIFICATION forming part of Letters Patent No. 438,793, dated October 21, 1890.

Applicati fil d May 19, 1890. Serial No. 352,279. (No model.)

To aZZ whom it may concern.-

l3e it known that I, RICHARD V. BAYLEY, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented or discovered a certain new and useful Improvement in Machines for Sever-ing Stay-Bolts, of which improvement the following is a specification.

The object of my invention isto provide means whereby the severing of stay-bolts to etfect their removal from the water-legs of steam-boilers and other confined spaces between plates connected by such bolts may be conveniently and expeditiously effected.

To this end my invention, generally stated, consists in the combination of a fluid-pressure cylinder, apiston workingihereima hookconnection for coupling said cylinder to a fixed abutment, and a severing-tool connected to the piston-rod of said cylinder.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings, Figure 1 is a longitudinal central section through a machine embodying my invention as applied in the removal of stay-bolts from one of the water-legs of a locomotive fire-box; Fig. 2, a plan or top view of the connecting-bar and tool, with a portion of the water-leg in section; and Figs. 3 and 4, side and end views in elevation of the tool detached.

In the practice of my invention I provide a fluid-pressure cylinder 1, which is closed at one end by a removable head 2 and at its 0pposite end by a head 3, which is preferably, as shown, integral with the cylinder, and is projected outwardly therefrom for the reception of a retracting-spring, to be presently described. A properly-packed piston dis fitted in the cylinder, and is provided with a pistonrod 5, which passes freely through a sleeve or tubular extension 6, secured by an external screw-thread in a central opening in the head 3. A supply-pipe 7, controlled by a regulating-valve 8, which is preferably a three-way cock, is connected to the removable head 2 of the cylinder, and is provided with a swiveling or universal joint 9 to admit of variation of position of the cylinder without affecting the supply of motive fluid thereto. The screw-threaded connection of the sleeve 6 and the opposite end of the bar being provided with a hooked or recessed projection 13, the center of the recess of which is substantially in line with the axis of the piston-rod 5. The hooked projection of the connecting bar serves to connect the apparatus to a stay-bolt, which is located adjacent to that which is to be operated on, and which acts as an abutment in one direction of the strain exerted in the application of pressure to the piston 4. A helical retracting-spring 14 surrounds the piston-rod 5 and bears at its ends against the fixed cylinder-head 3 and the adjacent face of the piston 4, the tension of said spring acting when unopposed by fluid-pressure on the opposite side of the piston to force the same to and maintain it at the limit of its rearward traverse or that in the direction of the head 2.

The cylinder lis adapted to be suspended through a flexible connection, from a fixed overhead support by an eye-bolt l5, securedin a ring 16, which is fitted truly around the cylinder, so that the same may be turned freely therein, the bearing-face of the cylinder on which it fits being located at such point in the length of the cylinder that the apparatus when suspended by a rope or chain from its overhead support may be balanced longitudinally as nearly as may be. The piston-rod 5 and sleeve 6 are made of sufficient length for the tool to reach staybolts near the extremity of the longest sheets connected by such bolts on which the apparatus is desired to operate.

In the operation of the apparatus it is suspended by a rope or chain attached to the eyebolt 15 in such position that the axis of the piston-rod 5 shall be as nearly as possible in the horizontal plane of the stay-bolt 17 which is to be severed and removed from the sheets 18 and 19, to which its ends are connected, and the projection 13 of the connecting-bar 12 is hooked upon a stay-bolt 20 in line with the stay-bolt 17. Fluid underpressure being then admitted behind the piston 4 by means of the regulating cook or valve 8, a stroke of the piston to the opposite limit of its traverse is thereby effected, and the stay-bolt 1.7 is broken or severed by the resultant pressure or blow of the tool 10 thereon. The regulating-cock S is then turned into the position shown in Fig. 1, exhausting the motive fluid from the cylinder, and the retracting-spring 14 returns the piston to initial position. The connecting-bar 12 being then hooked upon another stay-bolt, the machine is in readiness for another operation. sion of the apparatus and the capability of adjustment of the cylinder about its axial line enable the severing-tool to be presented in proper direction to and distance from the severalstay-bolts which are successively acted upon. The heads of the stay-bolts are subsequently cut off and the severed portions re moved in the usual manner, the necessary preliminary rupture of the stay-bolts being effected with materially greater facility and rapidity than is practicable under the ordinary method of hand-work.

I claim as my invention and desire to secure by Letters Patent-- 1. The combination of a fluid-pressure cylinder, a piston Working therein, a connecting-bar attached to the cylinder and having a hook-connection for coupling the cylinder detachably to a fixed abutment, and a severing-tool connected to the piston-rod of the cylinder, substantially as set forth.

2. The combination of a fluid-pressure cylinder, a piston Working therein, a connecting-bar attached to the cylinder and having a hook-connection for coupling the cylinder detachably to a fixed abutment, a severingtool connected to the pistonrod of the cylinder, and a support on the cylinder for connection to a flexible suspending member, sub stantially as set forth.

3. The combination of a fluid-pressure cylinder, a piston Working therein, a connecting-bar attached to the cylinder and having a hook-connection for coupling the cylinder detachably to a fixed abutment, a severingtool connected to the piston-rod of the cylinder, and a support in which the cylinder is suspended with the capacity of movement about its axial line, substantially as set forth.

4:. The combination of a fiuid-pressure cylinder, a piston working therein, a severingtool connected to the rod of said piston, and a longitudinally-adjustable connecting-bar coupled to the cylinder and provided with a hooked end projection for connecting the The flexible suspen-' cylinder detachably to a fixed abutment, substantially as set forth.

5. The combination of a fluid-pressure cylinder, a piston Working therein, a connecting-bar attached to the cylinder and having a hook-connection for coupling the cylinder detachably to a fixed abutment, a severingtool connected to the piston-rod of the cylinder, and a retracting-spring bearing against the cylinder-head adjacent to the severingtool and against the piston, substantially as set forth.

6. The combination of a fluid-pressure cylinder, a piston Working therein, a connecting-bar attached to the cylinder and having a hook-connection for coupling the cylinder detachably to a fixed abutment, a severingtool connected to the pistonrod of the cylinder, a retracting-spring bearing against the cylinder-head adjacent to the severing-tool and against the piston, and a ring in Which the cylinder is suspended at such portion of its length as to effect a substantial longitudinalbalauce of the apparatus, substantially as set forth.

'7. The combination of a fluid-pressure cylinder, a piston Working therein, a connecting-bar attached to the cylinder and having a hook-connection for coupling the cylinder detachably to a fixed abutment, a severingtool connected to the piston-rod of the cylinder, a support in which the cylinder is suspended with the capacity of movement about its axial line, and a fluid-supply pipe leading into the cylinder and provided with a swiveling or universal joint, substantially as set forth.

8. The combination of a fluid-pressure cylinder, a piston Working therein, a sleeve connected to one of the cylinder-heads, a pistonrod connected to the piston and passing freely through said sleeve, a severing-tool fixed in the outer end of said piston-rod, a connectingbar secured to the outer end of the sleeve and provided with an end projection which is hooked or recessed substantially in line with the piston-rod, a retracting-spring bearing against the head to Which the sleeve is connected and against the adjacent face of the piston, a fluid-pressure supply-pipe leading into the cylinder on the opposite side of the piston, and a suspending-ring in which the cylinder is fitted to turn freely,substantially as set forth.

In testimony whereof I have hereunto set my hand. i

RICHARD W. BAYLEY. \Vitnesses:

J. SNOWDEN BELL, W. B. CORWIN.

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